想敲代码又怕女朋友找？那就让她去玩桌面图标贪吃蛇，再也不用担心打扰自己敲代码了

最近在逛博客的时候看见了一个有趣的项目，使用桌面图标进行贪吃蛇游戏。采用的代码是vb，但我实在不会vb，就找了C++中关于桌面图标获取句柄的文章进行查看（第一次接触这个，实属菜鸟）。效果还行一步步获取到了想要的东西，然后偶然性看见了一位python大佬的博客，这就很OK了，看python代码就没啥问题了，然后就复制复制复制，看了一遍他的代码，接着就是来一个golang版的了。

在这里附上这位python版大佬的文章地址：用Windows10桌面图标玩python贪吃蛇

程序简单，思路算明确，至少我一遍就看懂了整个流程。然后就来一个golang吧。

一、定义一个航线结构体

type Vector struct {x int32y int32
}func (vector *Vector) Add(vec Vector) Vector {return Vector{vector.x + vec.x, vector.y + vec.y}
}func (vector *Vector) Set(vec Vector) {vector.x = vec.xvector.y = vec.y
}func (vector *Vector) Mult(num int32) Vector {return Vector{vector.x * num, vector.y * num}
}

这里就不累赘了，简单的来说就是一个步伐坐标点。

二、获取窗体句柄、窗体大小以及图标数

这里使用了 “github.com/lxn/win” 包。下载吧，直接go get

至于这里如何获取桌面的句柄吧，给为可参考spy++如何使用的。

从spy++中可以看见，要获取viewlist窗口的句柄，只需要从"Program Manager"获取两级子窗口即可。

var hwnd win.HWNDhwnd = win.FindWindow(nil, syscall.StringToUTF16Ptr("Program Manager"))hwnd = win.GetWindow(hwnd, win.GW_CHILD)
hwnd = win.GetWindow(hwnd, win.GW_CHILD)
var rect win.RECT
win.GetWindowRect(hwnd, &rect)
count := win.SendMessage(hwnd, win.LVM_GETITEMCOUNT, 0, 0)

代码如上，其中LVM_GETITEMCOUNT对于这个常量在，lxn/win这个包中并没有，所有我们就手动给他加一个即可。listview.go文件。

LVM_GETITEMCOUNT             = LVM_FIRST + 4

三、给每一个图标进行位置重定位

pos = make([]Vector, count)
pos[0] = Vector{rect.Right / 2, rect.Bottom / 2}
pos[1] = Vector{rect.Right / 2, rect.Bottom / 2}
pos[2] = Vector{rand.Int31n(rect.Right-400) + 200, rand.Int31n(rect.Bottom-400) + 200}
win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, 0, MAKELPARAM(pos[0].x, pos[0].y))
win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, 1, MAKELPARAM(pos[1].x, pos[1].y))
lcur := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&cur))))
fmt.Println(lcur)
win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, lcur, MAKELPARAM(pos[cur].x, pos[cur].y))
var i int
countInt = *(*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&count))))
for i = cur + 1; i < countInt; i++ {pos[i] = Vector{0, -100}lp := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&i))))win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, lp, MAKELPARAM(pos[i].x, pos[i].y))
}

代码如上，其中LVM_SETITEMPOSITION对于这个常量在，lxn/win这个包中并没有，所有我们就手动给他加一个即可。listview.go文件。

LVM_SETITEMPOSITION          = LVM_FIRST + 15

四、实现一个键盘监听

这个简单，直接上代码了：

func getKey() {for {if windev.KeyDownUp(windev.VK_LEFT) == 1 {key = 37}if windev.KeyDownUp(windev.VK_UP) == 1 {key = 38}if windev.KeyDownUp(windev.VK_RIGHT) == 1 {key = 39}if windev.KeyDownUp(windev.VK_DOWN) == 1 {key = 40}}
}

五、实现一个贪吃蛇了

首先是当蛇头位置改变时，后面的蛇身也需要跟着变化，那么剧需要对每一个位置重新赋值。

func run(pv Vector) {for i := cur - 1; i > 0; i-- {pos[i].Set(pos[i-1])}pos[0] = pos[0].Add(pv.Mult(60))for i := 0; i < countInt; i++ {lp := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&i))))win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, lp, MAKELPARAM(pos[i].x, pos[i].y))}time.Sleep(time.Millisecond * 200)
}func MAKELPARAM(x, y int32) uintptr {xt := int(x)yt := int(y)tem := yt << 16a := (*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&tem))))b := (*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&xt))))return *a | *b
}

然后将键盘控制结合：

for {// var v Vectorv := Vector{0, 0}if key == 37 {v = Vector{-1, 0}}if key == 38 {v = Vector{0, -1}}if key == 39 {v = Vector{1, 0}}if key == 40 {v = Vector{0, 1}}run(v)f1, _ := strconv.ParseFloat(fmt.Sprintf("%d", pos[0].x-pos[cur].x), 64)f2, _ := strconv.ParseFloat(fmt.Sprintf("%d", pos[0].y-pos[cur].y), 64)// fmt.Println(math.Sqrt(math.Pow(f1, 2) + math.Pow(f2, 2)))if math.Sqrt(math.Pow(f1, 2)+math.Pow(f2, 2)) < 60 {fmt.Println("jinru")cur++pos[cur].Set(Vector{rand.Int31n(rect.Right-400) + 200, rand.Int31n(rect.Bottom-400) + 200})lp := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&cur))))win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, lp, MAKELPARAM(pos[cur].x, pos[cur].y))}fmt.Printf("当前蛇头地址坐标：%d,%d\n", pos[0].x, pos[0].y)fmt.Printf("当前食物地址坐标：%d,%d\n", pos[cur].x, pos[cur].y)
}

六、全部实现代码

package mainimport ("fmt""math""math/rand""strconv""syscall""time""unsafe""github.com/cppdebug/windev""github.com/lxn/win"
)type Vector struct {x int32y int32
}func (vector *Vector) Add(vec Vector) Vector {return Vector{vector.x + vec.x, vector.y + vec.y}
}func (vector *Vector) Set(vec Vector) {vector.x = vec.xvector.y = vec.y
}func (vector *Vector) Mult(num int32) Vector {return Vector{vector.x * num, vector.y * num}
}var cur = 2
var key intfunc getKey() {for {if windev.KeyDownUp(windev.VK_LEFT) == 1 {key = 37}if windev.KeyDownUp(windev.VK_UP) == 1 {key = 38}if windev.KeyDownUp(windev.VK_RIGHT) == 1 {key = 39}if windev.KeyDownUp(windev.VK_DOWN) == 1 {key = 40}}
}var pos []Vector
var countInt int
var hwnd win.HWNDfunc main() {rand.Seed(time.Now().UnixNano())hwnd = win.FindWindow(nil, syscall.StringToUTF16Ptr("Program Manager"))hwnd = win.GetWindow(hwnd, win.GW_CHILD)hwnd = win.GetWindow(hwnd, win.GW_CHILD)var rect win.RECTwin.GetWindowRect(hwnd, &rect)count := win.SendMessage(hwnd, win.LVM_GETITEMCOUNT, 0, 0)fmt.Println(count)pos = make([]Vector, count)pos[0] = Vector{rect.Right / 2, rect.Bottom / 2}pos[1] = Vector{rect.Right / 2, rect.Bottom / 2}pos[2] = Vector{rand.Int31n(rect.Right-400) + 200, rand.Int31n(rect.Bottom-400) + 200}win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, 0, MAKELPARAM(pos[0].x, pos[0].y))win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, 1, MAKELPARAM(pos[1].x, pos[1].y))lcur := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&cur))))fmt.Println(lcur)win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, lcur, MAKELPARAM(pos[cur].x, pos[cur].y))var i intcountInt = *(*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&count))))for i = cur + 1; i < countInt; i++ {pos[i] = Vector{0, -100}lp := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&i))))win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, lp, MAKELPARAM(pos[i].x, pos[i].y))}go getKey()print(key)for {// var v Vectorv := Vector{0, 0}if key == 37 {v = Vector{-1, 0}}if key == 38 {v = Vector{0, -1}}if key == 39 {v = Vector{1, 0}}if key == 40 {v = Vector{0, 1}}run(v)f1, _ := strconv.ParseFloat(fmt.Sprintf("%d", pos[0].x-pos[cur].x), 64)f2, _ := strconv.ParseFloat(fmt.Sprintf("%d", pos[0].y-pos[cur].y), 64)// fmt.Println(math.Sqrt(math.Pow(f1, 2) + math.Pow(f2, 2)))if math.Sqrt(math.Pow(f1, 2)+math.Pow(f2, 2)) < 60 {fmt.Println("jinru")cur++pos[cur].Set(Vector{rand.Int31n(rect.Right-400) + 200, rand.Int31n(rect.Bottom-400) + 200})lp := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&cur))))win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, lp, MAKELPARAM(pos[cur].x, pos[cur].y))}fmt.Printf("当前蛇头地址坐标：%d,%d\n", pos[0].x, pos[0].y)fmt.Printf("当前食物地址坐标：%d,%d\n", pos[cur].x, pos[cur].y)}
}func run(pv Vector) {for i := cur - 1; i > 0; i-- {pos[i].Set(pos[i-1])}pos[0] = pos[0].Add(pv.Mult(60))for i := 0; i < countInt; i++ {lp := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&i))))win.SendMessage(hwnd, win.LVM_SETITEMPOSITION, lp, MAKELPARAM(pos[i].x, pos[i].y))}time.Sleep(time.Millisecond * 200)
}func MAKELPARAM(x, y int32) uintptr {xt := int(x)yt := int(y)tem := yt << 16a := (*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&tem))))b := (*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&xt))))return *a | *b
}

最后执行的时候别忘了，把这个取消了。点个赞收藏一波哦

如有需要改程序.exe执行文件的，可点击免费下载：桌面贪吃蛇go版.exe